As an adjective:
* The artist's paintings were abstract, filled with swirling colors and shapes that didn't represent anything concrete.
* The philosopher presented a very abstract argument, filled with complex ideas that were hard to grasp.
* The lecture on quantum physics was highly abstract, requiring a strong understanding of advanced concepts.
As a noun:
* The professor asked us to write an abstract for our research paper, summarizing the key findings.
* The artist's work was inspired by the beauty of abstraction, finding meaning in shapes and colors beyond their literal representation.
* The painting was a study in abstraction, devoid of any recognizable objects or figures.
As a verb:
* The author attempted to abstract the main points of the historical event, simplifying it for a wider audience.
* The scientist abstracted data from the experiment, analyzing the results to draw conclusions.
* The philosopher abstracted universal principles from specific examples, seeking to understand the underlying laws of the universe.